APA
Ceylon N. P. (., Ceylon N. P. (., . (1959). Manpower resource of Ceylon 1956-1981 By R. M. su. Columbo: Government Press.
Chicago
Ceylon National Planning (Council), Ceylon National Planning (Council), . 1959. Manpower resource of Ceylon 1956-1981 By R. M. su. Columbo: Government Press.
Harvard
Ceylon N. P. (., Ceylon N. P. (., . (1959). Manpower resource of Ceylon 1956-1981 By R. M. su. Columbo: Government Press.
MLA
Ceylon National Planning (Council), Ceylon National Planning (Council), . Manpower resource of Ceylon 1956-1981 By R. M. su. Columbo: Government Press. 1959.
